Machine for Working the Soil and Deflector Device Adapted to be Used on Such a Machine

Abstract

A soil working machine, particularly a precision tiller, includes a chassis ( 1 ) equipped with tillage implements provided in the form of at least one, preferably two successive train(s) of non-driven discs ( 2, 3 ) and of at least one deflecting device ( 4 ) serving to break the flow of soil projected by the discs ( 2 ) of one of the trains of discs ( 2, 3 ) and to ensure a leveling of the soil on the ground. The deflecting device ( 4 ) is, in its working part corresponding to the area struck by a flow of soil, having a number of plates ( 5 ) that can vibrate in order to facilitate a separation of the soil from these plates. The plates ( 5 ) are arranged side-by-side in the direction of the width of the machine and are designed so they cover at least 45% of the total working width of the machine.

1 . Machine for working the soil, in particular a precision disc harrow, of the type comprising a chassis ( 1 ) provided with plowing tools in the form of at least one and preferably two successive series of non-driven discs ( 2 ,  3 ) and at least one deflector device ( 4 ) shaped to break the flow of dirt projected by the discs ( 2 ) from one of the series of discs ( 2 ,  3 ) and to ensure leveling of the ground,
 characterized in that the deflector device ( 4 ) is, in its working portion, corresponding to the zone struck by a flow of dirt, constituted by a plurality of plates ( 5 ) adapted to oscillate, preferably resiliently, particularly under the action of the flow of dirt, to facilitate dislodging the dirt from said plates, said plates ( 5 ) being disposed side by side in the direction of the width of the machine and dimensioned to cover at least 45%, preferably at least 60%, of the total working width of said machine.   
   
   
       2 . Machine for working the soil according to  claim 1 ,
 characterized in that each plate ( 5 ) of group of plates ( 5 ), is provided with its own means ( 6 ,  7 ;  6 ′,  7 ′;  6 ″,  7 ″) for connection to the machine for working the soil to be able to be mounted on the machine for working the soil independently of the other plates ( 5 ) or groups of plates ( 5 ).   
   
   
       3 . Machine for working the soil according to  claim 1 ,
 characterized in that at least one portion of the means ( 7 ) for connection of the plate ( 5 ) or group of plates ( 5 ) to the machine extend between the chassis ( 1 ) and plate ( 5 ) or group of plates ( 5 ) and constitute moreover the support means for a member ( 9 ) for connection of the disc, located to the rear of said plate ( 5 ) or group of plates ( 5 ), to the chassis ( 1 ) of the machine.   
   
   
       4 . Machine for working the soil according to  claim 3 ,
 characterized in that the connection means of the plate ( 5 ) or group of plates ( 5 ) to the chassis ( 1 ) are constituted by at least two stirrups ( 6 ) adapted to overlap a beam of the chassis ( 1 ) and a plate ( 7 ) closing the stirrups ( 6 ) in the condition positioned on the chassis ( 1 ), the elements of plates ( 5 ) being mounted securely on said plate ( 7 ).   
   
   
       5 . Machine for working the soil according to  claim 4 ,
 characterized in that the plate ( 7 ) has a throat ( 8 ) within which is introduced one end of the connection member ( 9 ) of the disc ( 2 ,  3 ) to the chassis ( 1 ), this connection member ( 9 ) being constituted preferably by a helicoidal spring with at least one turn.   
   
   
       6 . Machine for working the soil according to  claim 1 ,
 characterized in that the deflector device ( 4 ) shaped to break the flow of dirt projected by the discs ( 2 ) of the front series of discs is coupled preferably securely for movement with the so-called rear series of discs ( 3 ).   
   
   
       7 . Machine for working the soil according to  claim 1 ,
 characterized in that the means ( 6 ′,  7 ′;  6 ″,  7 ″) for connection of the plate ( 5 ) or group of plates ( 5 ) to the machine for working the soil extend between the plate ( 5 ) or group of plates ( 5 ) and the disc ( 3 ) or member ( 9 ) for connecting the disc ( 3 ) to the chassis ( 1 ).   
   
   
       8 . Machine for working the soil according to  claim 1 ,
 characterized in that each plate ( 5 ) is connected in its portion prolonging its working portion to a base common to said plates ( 5 ), this base ( 11 ) being itself adapted to be secured to the machine, the base ( 11 ) and working portion of the plates ( 5 ) being formed of a single piece.   
   
   
       9 . Machine for working the soil according to  claim 8 ,
 characterized in that the plates ( 5 ) with their common base are obtained from a blank of sheet metal of generally rectangular appearance, sectioned over a portion of its width into a plurality of substantially parallel cutouts arising from a same free edge of the sheet metal blank to form said elements in the form of plates ( 5 ), this blank being if desired previously or subsequently to its cutting out, shaped to give it a generally curved profile.   
   
   
       10 . Machine for working the soil according to  claim 1 ,
 characterized in that the plates ( 5 ) are aligned along a line substantially perpendicular to the direction of advance of the chassis ( 1 ), and corresponding to the working width of the machine.   
   
   
       11 . Machine for working the soil according to  claim 1 ,
 characterized in that the plates ( 5 ) are positioned in an axially offset manner relative to the direction of advance of the chassis ( 1 ).   
   
   
       12 . Machine for working the soil according to  claim 1 ,
 characterized in that the plates are provided on their back with a seat depositor ( 10 ).   
   
   
       13 . Deflector device of the type shaped to break the flow of dirt projected by the discs ( 2 ,  3 ) of a machine for working the soil, such as a disc harrow, provided with at least one, preferably two successive series of discs ( 2 ,  3 ), characterized in that the deflector device is, in its working portion corresponding to the zone struck by a flow of dirt, constituted by a plurality of plates ( 5 ) adapted to oscillate, preferably resiliently, particularly under the action of the flow of dirt, these plates ( 5 ) being positionable side by side in the direction of the working width of the chassis ( 1 ) of the machine to be provided by means of connection means ( 6 ,  7 ;  6 ′,  7 ′;  6 ″,  7 ″) to the suitable machine. 
   
   
       14 . (canceled)